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What are the key technical points for spring grape management?
Spring is the season when grapes bud and unfold leaves, canes extend, and clusters form and flowers set fruit. Strengthening spring grape management can improve grape yield and quality. From mid-to-late February to early March, during the budbreak stage, irrigate to promote budbreak and apply quick-acting nitrogen fertilizer. At this stage, orchards with the conditions should irrigate the whole orchard promptly to ensure uniform budbreak. And at this time...
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Key Technical Points for Light Regulation in Greenhouse Grape Cultivation
In greenhouse grape cultivation, because the light intensity inside the shed is often less than 70% of that outdoors, it has a significant adverse effect on grape growth and fruiting, often causing serious flower and fruit drop, poor fruit coloration, low sugar content, poor flower bud differentiation and other phenomena, greatly reducing grape yield and quality. Therefore, enhancing...
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Grape Variety Introduction and Key Points of Pollution-Free Cultivation Techniques
The period for winter pruning of grapes is generally best carried out from early November to mid-February of the following year, that is, from 2 to 3 weeks after leaf fall to 3 to 4 weeks before spring bleeding occurs. Pruning too early will affect the return flow of nutrients, while pruning too late tends to cause bleeding. Bleeding often affects the sprouting of buds and impacts growth and fruiting. Now mainly...
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Detailed Guide to Key Grape Fruit Management Points in Summer
In July, grapes should be fertilized in a timely manner. Generally, one topdressing is applied at the early coloring stage of the fruit, mainly with phosphorus and potassium fertilizers. A sulfur-based ternary compound fertilizer can be chosen for soil application; foliar topdressing can also be used, with options such as a 0.5%-1% potassium dihydrogen phosphate solution sprayed 2-3 times consecutively. To improve the storability of grape berries, before harvest one can...
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Detailed Explanation of Key Techniques for High-Yield Cultivation of New Grape Varieties
1. Main Characteristics and Traits. First, large clusters and large berries. Takatsuma grape belongs to the large-cluster, large-berry type, with large and compact clusters of conical shape, averaging 600 g per cluster; the berries are large and plump, averaging 17 g per berry, and can reach more than 20 g after flower and fruit thinning, far larger than Red Globe and Black Globe, and comparable to the Ping-Pong grape Fujiminori. Second, good quality...
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Key Cultivation Techniques for the New Grape Variety Hongru
1. Spacing between plants and rows. In the north, 0.7 x 3 m is commonly used, planting 330 seedlings per mu, or 0.5 x 3 m, planting 440 seedlings per mu. In the south, 0.7 x 3 m is commonly used, planting 330 seedlings per mu, or 0.8 x 3 m, planting 280 seedlings per mu. Given that Hongru has vigorous growth, and to facilitate the production of high-quality fruit, it is recommended to use a trellis-and-canopy training system regardless of whether in the north or the south. ...
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How to manage young grapevines for high quality and efficiency
1. From after the grapes bud until late August, apply a topdressing once a month, using 5 kg of farmyard manure and 50 g of nitrogen fertilizer per plant each time, applied in holes, so as to apply fertilizer frequently and lightly; 2. For newly planted grapevines, set up small supports in the same year to tie and guide the new shoots. When the new shoots grow to about 20 cm, select and keep one thick, strong new shoot and remove the other tender shoots....
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Detailed Guide to Seedless Early-Ripening Cultivation of Grapes
I. Selection of vines for treatment: Choose vines with normal growth and strong vigor, as this gives a high success rate, good fruit set, a high seedless rate, large berries and good market quality. Treating weak or over-vigorous vines gives unstable results, small berries and uneven berry size. It is necessary to investigate the vine's development in the previous year to see...
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Which grape varieties are suitable for planting in the Changchun area?
Applying foliar fertilizer wisely: After the beginning of summer, the following foliar fertilizers can be selected according to the growth conditions of the grapes. ① Superphosphate extract: Take 1 kg of superphosphate and add 5 kg of clean water, soak for 12 hours, then filter and take the liquid. When using, dilute each kg of filtrate with 50 kg of water to obtain a 2% extract. ② Plant ash extract: Take 1 kg of plant ash and add...
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Three Simple Methods to Protect Greenhouse Grapes from Freezing
In recent years, the area under protected grape cultivation has increased. Due to large temperature fluctuations in early spring, temperature inversion easily occurs inside the greenhouse, causing early-sprouting varieties to suffer freeze damage. The following measures can be taken in production for prevention and remediation. 1. Water 1 day before the cold snap arrives to increase soil moisture and air humidity inside the greenhouse, using moisture to regulate temperature. 2. In the vineyard...
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